【OGG】OGG简单配置双向复制(三)
一.1 BLOG文档结构图
一.2 前言部分
一.2.1 导读
各位技术爱好者，看完本文后，你可以掌握如下的技能，也可以学到一些其它你所不知道的知识，~O(∩_∩)O~：
① OGG的双向实时复制功能
注意：本篇BLOG中代码部分需要特别关注的地方我都用***背景和红色字体来表示，比如下边的例子中，thread 1的最大归档日志号为33，thread 2的最大归档日志号为43是需要特别关注的地方。
List of Archived Logs in backup set 11
Thrd Seq Low SCN Low Time Next SCN Next Time
---- ------- ---------- ------------------- ---------- ---------
1 32 1621589 2015-05-29 11:09:52 1625242 2015-05-29 11:15:48
1 33 1625242 2015-05-29 11:15:48 1625293 2015-05-29 11:15:58
2 42 1613951 2015-05-29 10:41:18 1625245 2015-05-29 11:15:49
2 43 1625245 2015-05-29 11:15:49 1625253 2015-05-29 11:15:53
本文如有错误或不完善的地方请大家多多指正，ITPUB留言或QQ皆可，您的批评指正是我写作的最大动力。
一.2.2 实验环境介绍
项目
source db
target db
db 类型
单实例
单实例
db version
11.2.0.3
11.2.0.3
db 存储
FS type
FS type
ORACLE_SID
ogg1
ogg2
db_name
ogg1
ogg2
主机IP地址：
192.168.59.129
192.168.59.130
OS版本及kernel版本
RHEL6.5 64位，2.6.32-504.16.2.el6.x86_64
RHEL6.5 64位，2.6.32-504.16.2.el6.x86_64
OGG版本
11.2.1.0.1 64位
11.2.1.0.1 64位
OS hostname
orcltest
rhel6_lhr
一.2.3 相关参考文章链接
【OGG】OGG的下载和安装篇：http://blog.itpub.net/26736162/viewspace-1693241/
【OGG】OGG的单向DML复制配置(一):http://blog.itpub.net/26736162/viewspace-1696020/
【OGG】OGG的单向复制配置-支持DDL(二)：http://blog.itpub.net/26736162/viewspace-1696031/
一.2.4 本文简介
本文基于OGG的双向复制功能，主要参考网址为：http://ylw6006.blog.51cto.com/all/470441/16 ，非常感谢斩月大师。
在完成ogg的单向复制配置后，自然会想着向前推进一层，实现双向复制；在实际应用中，双向复制面临着许多问题，主要有如下几点：
1. 如果两个库同时更新同一条记录 如何处理？
2. 如果网络出现失败如何处理？
3. 如果数据不同步后如何修复？
本文介绍如何在前文的基础上简单实现ogg的双向复制！双向复制一般用于双业务中心环境下，目前笔者的生产环境中未使用到ogg，ogg系列的文章只是从技术上提前做一个准备，因而许多问题的细节未能理清，后续将继续学习研究！在开始之前，请先配置好db1-db2的单向复制(include ddl replicat)!
一.3 实验部分
一.3.1 实验目标
实现OGG1和OGG2的双向复制功能。
一.3.2 配置OGG1，添加checkpoint表
注意：本文OGG1和OGG2互为source和target，因而直接采用OGG1和OGG2来标识两台数据库服务器
[oracle@orcltest gg11]$ ggsci
Oracle GoldenGate Command Interpreter for Oracle
Version 11.2.1.0.1 OGGCORE_11.2.1.0.1_PLATFORMS_120423.0230_FBO
Linux, x64, 64bit (optimized), Oracle 11g on Apr 23 2012 08:32:14
Copyright (C) 1995, 2012, Oracle and/or its affiliates. All rights reserved.
GGSCI (orcltest) 1> view params ./GLOBALS
GGSCHEMA ggusr
GGSCI (orcltest) 2> edit params ./GLOBALS
GGSCHEMA ggusr
checkpointtable ggusr.rep_demo_ckpt
~
~
~
~
。。。。。。。。。。。。。。。。
~
~
~
~
~
"./GLOBALS" 2L, 51C written
GGSCI (orcltest) 3> view params ./GLOBALS
GGSCHEMA ggusr
checkpointtable ggusr.rep_demo_ckpt
GGSCI (orcltest) 4>
GGSCI (orcltest) 4> dblogin userid ggusr@ogg1,password lhr
Successfully logged into database.
GGSCI (orcltest) 5> add checkpointtable ggusr.rep_demo_ckpt
Successfully created checkpoint table ggusr.rep_demo_ckpt.
GGSCI (orcltest) 6> add checkpointtable ggusr.rep_demo_ckpt
ERROR: OCI Error ORA-00955: name is already used by an existing object (status = 955). Creating checkpoint table ggusr.rep_demo_ckpt, SQL <CREATE TABLE ggusr.rep_demo_ckpt ( group_name VARCHAR2(8) NOT NULL, group_key NUMBER(19) NOT NULL, seqno NUMBER(10), rba NUMBER(19) NOT NULL, audit_ts VARCHAR2(29), create_ts DATE NOT NULL, last_update_ts DATE NOT NULL, current_dir VARCHAR2(255) NOT NULL, log_csn VARCHAR2(129), log_xid VARCHAR2(129), log_cmplt_csn VARCHAR2(129), log_cmplt_xids VARCHAR2(2000), version NUMBER(3), PRIMARY KEY (group_name, group_key))>.
GGSCI (orcltest) 7>
一.3.3 配置OGG2,运行相关的脚本，支持DDL的复制
[oracle@rhel6_lhr gg11]$ ggsci
Oracle GoldenGate Command Interpreter for Oracle
Version 11.2.1.0.1 OGGCORE_11.2.1.0.1_PLATFORMS_120423.0230_FBO
Linux, x64, 64bit (optimized), Oracle 11g on Apr 23 2012 08:32:14
Copyright (C) 1995, 2012, Oracle and/or its affiliates. All rights reserved.
GGSCI (rhel6_lhr) 1> view params ./GLOBALS
checkpointtable ggusr.rep_demo_ckpt
GGSCI (rhel6_lhr) 2> edit params ./GLOBALS
GGSCI (rhel6_lhr) 3> view params ./GLOBALS
GGSCHEMA ggusr
checkpointtable ggusr.rep_demo_ckpt
GGSCI (rhel6_lhr) 4>
[oracle@orcltest ~]$ cd $OGG_HOME
[oracle@orcltest gg11]$ sqlplus sys/lhr@ogg2 as sysdba
SQL*Plus: Release 11.2.0.3.0 Production on Wed Jun 10 17:10:45 2015
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> select name,SUPPLEMENTAL_LOG_DATA_MIN, FORCE_LOGGING from v$database;
NAME SUPPLEME FOR
--------- -------- ---
OGG2 NO NO
SQL> alter database add supplemental log data ;
Database altered.
SQL> archive log list;
Database log mode Archive Mode
Automatic archival Enabled
Archive destination USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence 7
Next log sequence to archive 9
Current log sequence 9
SQL>
SQL> grant execute on utl_file to ggusr;
Grant succeeded.
SQL> @marker_setup.sql
Marker setup script
You will be prompted for the name of a schema for the Oracle GoldenGate database objects.
NOTE: The schema must be created prior to running this script.
NOTE: Stop all DDL replication before starting this installation.
Enter Oracle GoldenGate schema name:ggusr
Marker setup table script complete, running verification script...
Please enter the name of a schema for the GoldenGate database objects:
Setting schema name to GGUSR
MARKER TABLE
-------------------------------
OK
MARKER SEQUENCE
-------------------------------
OK
Script complete.
SQL> @ddl_setup.sql
Oracle GoldenGate DDL Replication setup script
Verifying that current user has privileges to install DDL Replication...
You will be prompted for the name of a schema for the Oracle GoldenGate database objects.
NOTE: For an Oracle 10g source, the system recycle bin must be disabled. For Oracle 11g and later, it can be enabled.
NOTE: The schema must be created prior to running this script.
NOTE: Stop all DDL replication before starting this installation.
Enter Oracle GoldenGate schema name:ggusr
Working, please wait ...
Spooling to file ddl_setup_spool.txt
Checking for sessions that are holding locks on Oracle Golden Gate metadata tables ...
Check complete.
Using GGUSR as a Oracle GoldenGate schema name.
Working, please wait ...
DDL replication setup script complete, running verification script...
Please enter the name of a schema for the GoldenGate database objects:
Setting schema name to GGUSR
CLEAR_TRACE STATUS:
Line/pos Error
-------------------- -----------------------------------------------------------------
No errors No errors
CREATE_TRACE STATUS:
Line/pos Error
-------------------- -----------------------------------------------------------------
No errors No errors
TRACE_PUT_LINE STATUS:
Line/pos Error
-------------------- -----------------------------------------------------------------
No errors No errors
INITIAL_SETUP STATUS:
Line/pos Error
-------------------- -----------------------------------------------------------------
No errors No errors
DDLVERSIONSPECIFIC PACKAGE STATUS:
Line/pos Error
-------------------- -----------------------------------------------------------------
No errors No errors
DDLREPLICATION PACKAGE STATUS:
Line/pos Error
-------------------- -----------------------------------------------------------------
No errors No errors
DDLREPLICATION PACKAGE BODY STATUS:
Line/pos Error
-------------------- -----------------------------------------------------------------
No errors No errors
DDL IGNORE TABLE
-----------------------------------
OK
DDL IGNORE LOG TABLE
-----------------------------------
OK
DDLAUX PACKAGE STATUS:
Line/pos Error
-------------------- -----------------------------------------------------------------
No errors No errors
DDLAUX PACKAGE BODY STATUS:
Line/pos Error
-------------------- -----------------------------------------------------------------
No errors No errors
SYS.DDLCTXINFO PACKAGE STATUS:
Line/pos Error
-------------------- -----------------------------------------------------------------
No errors No errors
SYS.DDLCTXINFO PACKAGE BODY STATUS:
Line/pos Error
-------------------- -----------------------------------------------------------------
No errors No errors
DDL HISTORY TABLE
-----------------------------------
OK
DDL HISTORY TABLE(1)
-----------------------------------
OK
DDL DUMP TABLES
-----------------------------------
OK
DDL DUMP COLUMNS
-----------------------------------
OK
DDL DUMP LOG GROUPS
-----------------------------------
OK
DDL DUMP PARTITIONS
-----------------------------------
OK
DDL DUMP PRIMARY KEYS
-----------------------------------
OK
DDL SEQUENCE
-----------------------------------
OK
GGS_TEMP_COLS
-----------------------------------
OK
GGS_TEMP_UK
-----------------------------------
OK
DDL TRIGGER CODE STATUS:
Line/pos Error
-------------------- -----------------------------------------------------------------
No errors No errors
DDL TRIGGER INSTALL STATUS
-----------------------------------
OK
DDL TRIGGER RUNNING STATUS
----------------------------------------------------------------------
ENABLED
STAYMETADATA IN TRIGGER
----------------------------------------------------------------------
OFF
DDL TRIGGER SQL TRACING
----------------------------------------------------------------------
0
DDL TRIGGER TRACE LEVEL
----------------------------------------------------------------------
0
LOCATION OF DDL TRACE FILE
------------------------------------------------------------------------------------------------------------------------
/u01/app/oracle/diag/rdbms/ogg2/ogg2/trace/ggs_ddl_trace.log
Analyzing installation status...
STATUS OF DDL REPLICATION
------------------------------------------------------------------------------------------------------------------------
SUCCESSFUL installation of DDL Replication software components
Script complete.
SQL> @role_setup.sql
GGS Role setup script
This script will drop and recreate the role GGS_GGSUSER_ROLE
To use a different role name, quit this script and then edit the params.sql script to change the gg_role parameter to the preferred name. (Do not run the script.)
You will be prompted for the name of a schema for the GoldenGate database objects.
NOTE: The schema must be created prior to running this script.
NOTE: Stop all DDL replication before starting this installation.
Enter GoldenGate schema name:ggusr
Wrote file role_setup_set.txt
PL/SQL procedure successfully completed.
Role setup script complete
Grant this role to each user assigned to the Extract, GGSCI, and Manager processes, by using the following SQL command:
GRANT GGS_GGSUSER_ROLE TO <loggedUser>
where <loggedUser> is the user assigned to the GoldenGate processes.
SQL>
SQL> GRANT GGS_GGSUSER_ROLE TO ggusr;
Grant succeeded.
SQL> @ddl_enable.sql
Trigger altered.
SQL> @?/rdbms/admin/dbmspool.sql
Package created.
Grant succeeded.
SQL> @ddl_pin.sql ggusr
PL/SQL procedure successfully completed.
PL/SQL procedure successfully completed.
PL/SQL procedure successfully completed.
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
[oracle@orcltest gg11]$
一.3.4 OGG2上配置extract和pump进程
[oracle@rhel6_lhr gg11]$ ggsci
Oracle GoldenGate Command Interpreter for Oracle
Version 11.2.1.0.1 OGGCORE_11.2.1.0.1_PLATFORMS_120423.0230_FBO
Linux, x64, 64bit (optimized), Oracle 11g on Apr 23 2012 08:32:14
Copyright (C) 1995, 2012, Oracle and/or its affiliates. All rights reserved.
GGSCI (rhel6_lhr) 1> dblogin userid ggusr@ogg2,password lhr
Successfully logged into database.
GGSCI (rhel6_lhr) 2> add trandata hr.*
Logging of supplemental redo data enabled for table HR.COUNTRIES.
Logging of supplemental redo data enabled for table HR.DEPARTMENTS.
Logging of supplemental redo data enabled for table HR.EMPLOYEES.
Logging of supplemental redo data enabled for table HR.JOBS.
Logging of supplemental redo data enabled for table HR.JOB_HISTORY.
Logging of supplemental redo data enabled for table HR.LOCATIONS.
Logging of supplemental redo data enabled for table HR.REGIONS.
Logging of supplemental redo data enabled for table HR.T1.
Logging of supplemental redo data enabled for table HR.T2.
2015-06-10 03:11:40 WARNING OGG-00869 No unique key is defined for table 'T3'. All viable columns will be used to represent the key, but may not guarantee uniqueness. KEYCOLS may be used to define the key.
Logging of supplemental redo data enabled for table HR.T3.
GGSCI (rhel6_lhr) 3> edit params eora_hr2
GGSCI (rhel6_lhr) 4> view params eora_hr2
extract eora_hr2
setenv (ORACLE_SID=ogg2)
setenv (ORACLE_HOME=/u01/app/oracle/product/11.2.0/dbhome_1)
setenv (NLS_LANG=AMERICAN_AMERICA.ZHS16GBK)
ddl include all
userid ggusr,password lhr
tranlogoptions excludeuser ggusr //避免出现死循环复制，db1上的extract进程也需要进行此项设置
exttrail ./dirdat/ab
table hr.*;
GGSCI (rhel6_lhr) 4> add extract eora_hr2,tranlog,begin now
EXTRACT added.
GGSCI (rhel6_lhr) 5> add exttrail ./dirdat/ab,extract eora_hr2,megabytes 100
EXTTRAIL added.
GGSCI (rhel6_lhr) 6> start extract eora_hr2
Sending START request to MANAGER ...
EXTRACT EORA_HR2 starting
GGSCI (rhel6_lhr) 7> edit params pora_hr2
GGSCI (rhel6_lhr) 8> view params pora_hr2
extract pora_hr2
setenv (ORACLE_SID=ogg2)
setenv (ORACLE_HOME=/u01/app/oracle/product/11.2.0/dbhome_1)
setenv (NLS_LANG=AMERICAN_AMERICA.ZHS16GBK)
passthru
rmthost 192.168.59.129,mgrport 7809
rmttrail ./dirdat/pb
table hr.*;
GGSCI (rhel6_lhr) 9> add extract pora_hr2,exttrailsource ./dirdat/ab
EXTRACT added.
GGSCI (rhel6_lhr) 10> add rmttrail ./dirdat/pb extract pora_hr2,megabytes 100
RMTTRAIL added.
GGSCI (rhel6_lhr) 11> start extract pora_hr2
Sending START request to MANAGER ...
EXTRACT PORA_HR2 starting
GGSCI (rhel6_lhr) 12> info all
Program Status Group Lag at Chkpt Time Since Chkpt
MANAGER RUNNING
EXTRACT RUNNING EORA_HR2 00:00:00 00:04:16
EXTRACT RUNNING PORA_HR2 00:00:00 00:00:00
REPLICAT RUNNING RORA_HR 00:00:00 00:00:01
GGSCI (rhel6_lhr) 13>
OGG1上设置抽取进程参数，添加tranlogoptions excludeuser ggusr：
GGSCI (orcltest) 15> view params EORA_HR
extract eora_hr
setenv (ORACLE_SID=ogg1)
setenv (ORACLE_HOME=/u02/app/oracle/product/11.2.0/dbhome_1)
setenv (NLS_LANG=AMERICAN_AMERICA.ZHS16GBK)
ddl include all
tranlogoptions excludeuser ggusr
userid ggusr,password lhr
exttrail ./dirdat/hr
table hr.*;
GGSCI (orcltest) 16>
一.3.5 OGG1上配置replicat进程
[oracle@orcltest gg11]$ ggsci
Oracle GoldenGate Command Interpreter for Oracle
Version 11.2.1.0.1 OGGCORE_11.2.1.0.1_PLATFORMS_120423.0230_FBO
Linux, x64, 64bit (optimized), Oracle 11g on Apr 23 2012 08:32:14
Copyright (C) 1995, 2012, Oracle and/or its affiliates. All rights reserved.
GGSCI (orcltest) 1> info all
Program Status Group Lag at Chkpt Time Since Chkpt
MANAGER RUNNING
EXTRACT RUNNING EORA_HR 00:00:00 00:00:10
EXTRACT RUNNING PORA_HR 00:00:00 00:00:05
GGSCI (orcltest) 2> view params rora_hr2
ERROR: PARAMS file RORA_HR2 does not exist.
GGSCI (orcltest) 3> edit params rora_hr2
replicat rora_hr2
setenv (ORACLE_SID=ogg1)
setenv (ORACLE_HOME=/u02/app/oracle/product/11.2.0/dbhome_1)
setenv (NLS_LANG=AMERICAN_AMERICA.ZHS16GBK)
ddl include all
ddlerror default ignore retryop maxretries 3 retrydelay 5
userid ggusr,password lhr
handlecollisions
assumetargetdefs
discardfile ./dirrpt/rora_hr2.dsc,purge
map hr.* ,target hr.*;
~
~
~
~
。。。。。。。。。。。。。。。
~
~
~
~
~
"dirprm/rora_hr2.prm" [New] 11L, 345C written
GGSCI (orcltest) 4> view params rora_hr2
replicat rora_hr2
setenv (ORACLE_SID=ogg1)
setenv (ORACLE_HOME=/u02/app/oracle/product/11.2.0/dbhome_1)
setenv (NLS_LANG=AMERICAN_AMERICA.ZHS16GBK)
ddl include all
ddlerror default ignore retryop maxretries 3 retrydelay 5
DDLOPTIONS REPORT
userid ggusr,password lhr
handlecollisions
assumetargetdefs
discardfile ./dirrpt/rora_hr2.dsc,purge
map hr.* ,target hr.*;
GGSCI (orcltest) 5> add replicat rora_hr2,exttrail ./dirdat/pb
REPLICAT added.
GGSCI (orcltest) 6> start replicat rora_hr2
Sending START request to MANAGER ...
REPLICAT RORA_HR2 starting
GGSCI (orcltest) 7> info all
Program Status Group Lag at Chkpt Time Since Chkpt
MANAGER RUNNING
EXTRACT RUNNING EORA_HR 00:00:00 00:00:00
EXTRACT RUNNING PORA_HR 00:00:00 00:00:09
REPLICAT RUNNING RORA_HR2 00:00:00 00:00:04
GGSCI (orcltest) 8>
一.3.6 测试
一.3.6.1 ddl测试
[oracle@orcltest gg11]$ sqlplus hr/hr@ogg1
SQL*Plus: Release 11.2.0.3.0 Production on Wed Jun 10 18:07:48 2015
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> create table t5 as select * from dual;
Table created.
SQL> conn hr/hr@ogg2
Connected.
SQL> select count(1) from t5;
COUNT(1)
----------
1
SQL> alter table t5 add name varchar2(255);
Table altered.
SQL> conn hr/hr@ogg1
Connected.
SQL> desc t5
Name Null? Type
----------------------------------------- -------- ----------------------------
DUMMY VARCHAR2(1)
NAME VARCHAR2(255)
DDL测试注意查看ddl日志：
OGG2上的日志（/u01/app/oracle/diag/rdbms/ogg2/ogg2/trace/ggs_ddl_trace.log）：
SESS 470002-2015-06-10 18:11:50 : DDL : ************************* Start of log for DDL sequence [1508], v[ $Id: ddl_setup.sql /st_oggcore_11.2.1/8 2012/04/02 11:11:33 smijatov Exp $ ] trace level [0], owner schema of DDL package [GGUSR], objtype [TABLE] name [HR.T5]
SESS 470002-2015-06-10 18:11:50 : DDLTRACE1 : Before Trigger: point in execution = [1.0], objtype [TABLE] name [HR.T5]
SESS 470002-2015-06-10 18:11:50 : DDL : DDL operation [ create table t5 as select * from dual ], sequence [1508], DDL type [CREATE] TABLE, real object type [TABLE], validity [], object ID [], object [HR.T5], real object [HR.T5], base object schema [], base object name [], logged as [HR]
SESS 470002-2015-06-10 18:11:50 : DDL : Start SCN found [1112052]
SESS 470002-2015-06-10 18:11:50 : DDL : ------------------------- End of log for DDL sequence [1508]
SESS 450003-2015-06-10 18:12:38 : DDL : ************************* Start of log for DDL sequence [1509], v[ $Id: ddl_setup.sql /st_oggcore_11.2.1/8 2012/04/02 11:11:33 smijatov Exp $ ] trace level [0], owner schema of DDL package [GGUSR], objtype [TABLE] name [HR.T5]
SESS 450003-2015-06-10 18:12:38 : DDLTRACE1 : Before Trigger: point in execution = [1.0], objtype [TABLE] name [HR.T5]
SESS 450003-2015-06-10 18:12:38 : DDL : DDL operation [alter table hr."T5" add name varchar2(255) /* GOLDENGATE_DDL_REPLICATION */ ], sequence [1509], DDL type [ALTER] TABLE, real object type [TABLE], validity [VALID], object ID [76900], object [HR.T5], real object [HR.T5], base object schema [], base object name [], logged as [GGUSR]
SESS 450003-2015-06-10 18:12:38 : DDL : Start SCN found [1112101]
SESS 450003-2015-06-10 18:12:40 : DDL : ------------------------- End of log for DDL sequence [1509]
OGG1上的日志（/u02/app/oracle/diag/rdbms/ogg1/ogg1/trace/ggs_ddl_trace.log）：
SESS 450045-2015-06-10 04:05:42 : DDL : ************************* Start of log for DDL sequence [43], v[ $Id: ddl_setup.sql /st_oggcore_11.2.1/8 2012/04/02 11:11:33 smijatov Exp $ ] trace level [0], owner schema of DDL package [GGUSR], objtype [TABLE] name [HR.T5]
SESS 450045-2015-06-10 04:05:42 : DDLTRACE1 : Before Trigger: point in execution = [1.0], objtype [TABLE] name [HR.T5]
SESS 450045-2015-06-10 04:05:42 : DDL : DDL operation [ create table hr."T5" as select * from dual /* GOLDENGATE_DDL_REPLICATION */ ], sequence [43], DDL type [CREATE] TABLE, real object type [TABLE], validity [], object ID [], object [HR.T5], real object [HR.T5], base object schema [], base object name [], logged as [GGUSR]
SESS 450045-2015-06-10 04:05:42 : DDL : Start SCN found [1121651]
SESS 450045-2015-06-10 04:05:42 : DDL : ------------------------- End of log for DDL sequence [43]
SESS 470002-2015-06-10 04:06:19 : DDL : ************************* Start of log for DDL sequence [44], v[ $Id: ddl_setup.sql /st_oggcore_11.2.1/8 2012/04/02 11:11:33 smijatov Exp $ ] trace level [0], owner schema of DDL package [GGUSR], objtype [TABLE] name [HR.T5]
SESS 470002-2015-06-10 04:06:19 : DDLTRACE1 : Before Trigger: point in execution = [1.0], objtype [TABLE] name [HR.T5]
SESS 470002-2015-06-10 04:06:19 : DDL : DDL operation [alter table t5 add name varchar2(255) ], sequence [44], DDL type [ALTER] TABLE, real object type [TABLE], validity [VALID], object ID [76920], object [HR.T5], real object [HR.T5], base object schema [], base object name [], logged as [HR]
SESS 470002-2015-06-10 04:06:19 : DDL : Start SCN found [1121693]
SESS 470002-2015-06-10 04:06:20 : DDL : ------------------------- End of log for DDL sequence [44]
一.3.6.2 dml测试
[oracle@orcltest gg11]$ sqlplus hr/hr@ogg1
SQL*Plus: Release 11.2.0.3.0 Production on Wed Jun 10 18:13:37 2015
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> create table t6 as select * from dual;
Table created.
SQL> insert into t6 select * from t6;
1 row created.
SQL> commit;
Commit complete.
SQL> select count(1) from t6;
COUNT(1)
----------
2
SQL> conn hr/hr@ogg2
Connected.
SQL> select count(1) from t6;
COUNT(1)
----------
2
SQL> insert into t6 select * from t6;
2 rows created.
SQL> commit;
Commit complete.
SQL> select count(1) from t6;
COUNT(1)
----------
4
SQL> conn hr/hr@ogg1
Connected.
SQL> select count(1) from t6;
COUNT(1)
----------
4
SQL>
一.3.7 实验总结
OGG的双向复制其实就是在每台机器上都进行相关的单向配置。
一.4 About Me
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本文转自lhrbest 51CTO博客，原文链接：http://blog.51cto.com/lhrbest/1661911，如需转载请自行联系原作者
